Attachment for disk furrow-cultivators.



B. H. WHIPPLE.

ATTACHMENT FOR DISK FURROW OULTIVATORS.

APPLICATION FILED AUG. 18, .1913.

Patented Apr.28, 1914.

0.. WASHIN sectional view. on line 8-3 of Fig. 2,

BENJAMIN H. WHIPPLE, OF FOREST CITY, MISSOURI.

ATTACHMENT FOR DISK FURROW-CULTIVATORS.

Specification of Letters Patent.

Patented Apr. 28, 1914.

Application filed August 18, 1913. Serial No. 785,413.

T 0 all wiwm it may concern Be it known that I, BENJAMIN H. lVI-IIP-rLn, a citizen of the United States, residing at Forest City, in thecounty of Holt and State of Missouri, have invented a new and usefulAttachment for DiskFurro-w-Oultivators; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to disk furrow cultivators, and particularly tonew and useful side knives adapted for attachment to the outer sides ofthe runners of the cultivator. I-Ieretofore. all such knives, owing totheir construction and arrangement only knock over or bend the weeds,which spring up adjacent the hills of corn, and furthermore, do notthoroughly break the clods.

Therefore, the present invention aims to overcome such disadvantages,and to this end, the knives are so constructed and mounted so as to beadjusted, in order to uproot or cut the weeds, as well as thoroughlybreaking the clods, which breaking of the clods is accomplished, owingto the knives being disposed at an obtuse angle to the plane of thedisks of the cultivator. By-

the adjustment of the knives, the same may be directed fartherdownwardly, orso as totravel substantially upon the surface of the soil,

In practical fields the details of construction may necessitatealterations, to wh1ch the patentee is entitled, provided the alterationsfall within the scope of what is claimed.

The invent-ion comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure l is a. view of a disk furrow cultivator showingthe improved side knives as applied. Fig. 2 is an enlarged perspectiveview of one of the knives showing the same as adjustably connected toone of the runners. Fig. 3 is a showing the knife adjusted in adifferent position. Fig. a is a view showing one of the knives, and aportion of one of the runners, showing the knife as having beendetached. Fig. 5 is a view of one of the knives, showing theadjustability of the same omitted.

Referring more particularly to the drawings 1 designates the runners ofthe usual form of a disk furrow cultivator, while 2 denotes the disks,which are connected to the runners in the usual manner.

Each runner is provided with a series of bolt holes 3, say for instance,three in number. However, the end holes are slightly elongated, whilethe center hole is circular. The knives 4t comprise a broad blade 5 having a forward diagonally arranged cutting edge 6, which acts to shear orout the weeds, as well as cutting into the soil and cutting the clods.The outer portion of the blade is likewise provided with a cutting edge7, which is arranged at an obtuse angle to the cutting edge 6, and at anacute angle to the rear edge or heel of the blade. This latter cuttingedge 7 likewise acts to shear the weeds as well as cutting the soil andthe clods thereof. The inner end of the knife or blade is provided withan upstanding portion or flange 8 having three bolt holes 9 to receivebolts 10, which also pass through the central bolt hole and the endelongated holes of each runner, with their ends provided with nuts. Bythis arrangement theknives are adjustably secured to the runners. Toadjust the knives the bolts of the end holes may be loosened, and theknives arranged as desired, the upstanding flange portion swinging uponthe central bolt as a pivot, and then by tightening the nuts on thebolts, the knives may be secured firmly in position.

It will be observed that by the manner in which the knives are arrangedand constructed, their planes always remain substantially at an obtuseangle to the disks 2 of the cultivator. In one of the figures of thedrawings the rear portion or heel of one of the blades is provided withdownwardly extending spurs or points 11, which act to harrow the soil.

By virtue of the adjustability of the knives, they may be so arranged asto travel substantially upon the surface of the soil or arranged totravel under the soil.

From the foregoing it is apparent that there have been devised simpleand eflicient cutting knives applicable to disk cultivators, and such ashave been found practical and desirable owing to the fact that theythoroughly undermine the weeds and the like and agitate the soil.

The invention having been set forth, what is claimed as new and usefulis The combination with a cultivator having horizontally disposedrunners, of a pair of knives arranged adjustably on the sides of therunners, said knives comprising upstanding flange portions, each beingpivoted to the outer face of a runner, means cooperating with eachflange and each runner upon each side of the pivot of said flange forholding the knives in adjusted positions, blades extending laterally andhorizontally from said flanges and provided with cutting edges extendingat slight acute angles to the plane of the rear portions of the-runners,each of said blades having an additional cutting edge at its outerportion extending at an obtwo subscribing witnesses.

BENJAMIN H. 'WHIPPLE.

lVitnesses:

THOMAS E. XVHIPPLE, LOYD R. WVHIPPLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01' Patents Washington, D. C.

